Telegraphy self-taught
Subtitle: a complete manual of instruction.
By: Containing chapters and lessons on telegraphy in all its branches. Including easy experiments in electricity and magnetism which operators should know. By Theo. A. Edison.
Publisher: F.J. Drake & co.
Published: 1921
Place of publication: Chicago
Language: eng
Number of pages: 172
Subjects: Telegraph -- Operators' manuals.